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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "sync/engine/traffic_recorder.h"
#include "base/json/json_writer.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/values.h"
#include "sync/protocol/proto_value_conversions.h"
#include "sync/protocol/sync.pb.h"
#include "sync/sessions/sync_session.h"
#include "sync/util/time.h"
namespace syncer {
// Return current time.
base::Time TrafficRecorder::GetTime() {
return base::Time::Now();
}
TrafficRecorder::TrafficRecord::TrafficRecord(const std::string& message,
TrafficMessageType message_type,
bool truncated,
base::Time time) :
message(message),
message_type(message_type),
truncated(truncated),
timestamp(time) {
}
TrafficRecorder::TrafficRecord::TrafficRecord()
: message_type(UNKNOWN_MESSAGE_TYPE),
truncated(false) {
}
TrafficRecorder::TrafficRecord::~TrafficRecord() {
}
TrafficRecorder::TrafficRecorder(unsigned int max_messages,
unsigned int max_message_size)
: max_messages_(max_messages),
max_message_size_(max_message_size) {
}
TrafficRecorder::~TrafficRecorder() {
}
namespace {
const char* GetMessageTypeString(TrafficRecorder::TrafficMessageType type) {
switch(type) {
case TrafficRecorder::CLIENT_TO_SERVER_MESSAGE:
return "Request";
case TrafficRecorder::CLIENT_TO_SERVER_RESPONSE:
return "Response";
default:
NOTREACHED();
return "";
}
}
}
DictionaryValue* TrafficRecorder::TrafficRecord::ToValue() const {
scoped_ptr<DictionaryValue> value;
if (truncated) {
value.reset(new DictionaryValue());
value->SetString("message_type",
GetMessageTypeString(message_type));
value->SetBoolean("truncated", true);
} else if (message_type == TrafficRecorder::CLIENT_TO_SERVER_MESSAGE) {
sync_pb::ClientToServerMessage message_proto;
if (message_proto.ParseFromString(message))
value.reset(
ClientToServerMessageToValue(message_proto,
false /* include_specifics */));
} else if (message_type == TrafficRecorder::CLIENT_TO_SERVER_RESPONSE) {
sync_pb::ClientToServerResponse message_proto;
if (message_proto.ParseFromString(message))
value.reset(
ClientToServerResponseToValue(message_proto,
false /* include_specifics */));
} else {
NOTREACHED();
}
value->SetString("timestamp", GetTimeDebugString(timestamp));
return value.release();
}
ListValue* TrafficRecorder::ToValue() const {
scoped_ptr<ListValue> value(new ListValue());
std::deque<TrafficRecord>::const_iterator it;
for (it = records_.begin(); it != records_.end(); ++it) {
const TrafficRecord& record = *it;
value->Append(record.ToValue());
}
return value.release();
}
void TrafficRecorder::AddTrafficToQueue(TrafficRecord* record) {
records_.resize(records_.size() + 1);
std::swap(records_.back(), *record);
// We might have more records than our limit.
// Maintain the size invariant by deleting items.
while (records_.size() > max_messages_) {
records_.pop_front();
}
}
void TrafficRecorder::StoreProtoInQueue(
const ::google::protobuf::MessageLite& msg,
TrafficMessageType type) {
bool truncated = false;
std::string message;
if (static_cast<unsigned int>(msg.ByteSize()) >= max_message_size_) {
// TODO(lipalani): Trim the specifics to fit in size.
truncated = true;
} else {
msg.SerializeToString(&message);
}
TrafficRecord record(message, type, truncated, GetTime());
AddTrafficToQueue(&record);
}
void TrafficRecorder::RecordClientToServerMessage(
const sync_pb::ClientToServerMessage& msg) {
StoreProtoInQueue(msg, CLIENT_TO_SERVER_MESSAGE);
}
void TrafficRecorder::RecordClientToServerResponse(
const sync_pb::ClientToServerResponse& response) {
StoreProtoInQueue(response, CLIENT_TO_SERVER_RESPONSE);
}
} // namespace syncer
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